Display Apparatus Dummy Pads Equalize Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display apparatuses face challenges in maintaining consistent resistance levels across different voltage transmission paths, leading to inconsistent current supply and potential deterioration in display quality due to varying turn-off timing of thin film transistors.
Innovation Solution
The display apparatus incorporates dummy pads and optimized connection lines to ensure equal resistance levels across different transmission paths for gate and scan driving voltages, using a configuration of voltage lines and pads that connect gate and scan driver ICs to maintain consistent current supply and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple driving circuits are connected through different transmission paths, then the display apparatus can control multiple pixel regions, but the resistance levels across different transmission paths become inconsistent
Solution Approach 1:
The patent introduces dummy pads with specific resistance values to equalize the total resistance across different transmission paths. By calculating and configuring the dummy pad resistance (R_dummy) to compensate for path resistance differences, all transmission paths achieve equal total resistance, ensuring consistent voltage levels at different driving circuits.
Solution Approach 2:
The patent modifies the resistance parameter of transmission paths by adding dummy pads with specifically designed resistance values. This changes the overall resistance characteristic of each path to achieve uniformity across all paths, directly addressing the resistance inconsistency problem.
2Device complexity
If transmission paths have different resistance levels, then the circuit configuration becomes simpler, but the current supply becomes inconsistent leading to display quality deterioration
Solution Approach 1:
The dummy pads act as intermediary elements inserted into transmission paths with higher resistance. These dummy pads provide additional resistance to balance the total resistance across all paths, serving as mediators that equalize current flow without requiring complex circuit redesign.
3Reliability
If dummy pads are added to equalize resistance, then the current supply consistency improves, but the device complexity increases
Solution Approach 1:
The patent divides the transmission path into segments, inserting dummy pads at specific locations where resistance compensation is needed. This segmentation approach allows selective addition of dummy pads only in necessary paths rather than uniformly across all paths, minimizing overall complexity increase.
Data Source
AI summary
A display apparatus includes pixels, a driver for providing a driving voltage, and conductive lines including a first line, a second line, and a third line. The display apparatus further includes a first circuit electrically connected to the driver for receiving the driving voltage and electrically connected to the pixels for controlling the pixels. The first circuit includes a first chip, a first inner line, a first pad, a second pad, a third pad, a fourth pad, and a fifth pad. The first chip is electrically connected to the driver through the third pad, the fourth pad, the fifth pad, the third line, the second line, the second pad, the first inner line, the first pad, and the first line. The fourth and fifth pads may contribute to consistent resistance for paths that transmit the driving voltage, for enabling desirable display quality of the display apparatus.